Waterproof lacquer



y 8, 1940. c, 5. mm H m. 2,202,254

WATERPROOF LAGQUER Original Filed Feb. 9, 1938 5 Sfieets-Sheet 1 COATING 1 so To MATERIAL- LAcQuER. MIcA. c N /a KNPFE 8 D YER 6' 7 9 R 6 2 3 4 LACQUER MICA- SUCTION.

INVENTORS CIIARLES .5. H7477 MATERIAL BY w/u. MM 1:. M50656. 3

' ATTORNEY- c. s'. HYATT n- AL. WATERPROOF LACQUER May 28, If 0.

Original Filed Feb. 9, 1938 3 Sheets-Sheet 3 ROTARY BRUSH.

DRYER ROTARY sTIRRER,

OF AI R ADJUSTABLE ROLLER.

DIRECTION COATING MATERIAL.

IN VENTORS CHARLES s. HY/qTT,

WIND-UP ROLL.

W/l L/HM D HEDGES.

A TTORNEYS.

Patented May 28-, 1 4 32,202,254

UNITED STATES p PATENT OFFICE WATERPROOF LACQUER. Charles s. Hyatt and William D. Hedges, Columbus, Ohio, assignors to Columbus Coated Fabrics Corporation, Columbus, Ohio, a corporation of Ohio Original application February 9', 1938, Serial No.

Divided and this application July 28,

1938, Serial No. 221,851

3 Claims.

and a method of making them.

It is the particular object of this invention to provide a waterproofed silk.-

It is the object of this invention to provide a m-ica, pigment or cellulose flock is designated 4. 5 waterproof coating and a method of applying the Before the lacquer dries the mica having been coating so as to produce waterproofed textile sifted on or blown on in excess, any excess is rematerials. moved by suction before the product is com- It is an object of this invention to provide pletely' dry. Under some circumstances, the exsuch a waterproofed textile material that it will cess is removed after. the product is dried. 10 remain substantially indefinitely waterproofed, Referring to Figures 6, '7, 8 'and 9, the roll of flexible and non-adherent so that the surface of textilematerial is .passed beneath a coater .5. the treated materials will be smooth without which has a scraping knife 6 to regulate the tacking or tackiness. depth of the coating 2 on the textile material I.

It is an objectof this invention to provide a Thereafter a second coating 3 maye pp 15 coating lacquer having a nitrocellulose body, a by the lacq e Sp ay hen the mica coa resinous plastioizer that is light resistant and a 4 is applied, by the mica dusting apparatus 8. softener to impart flexibility. Upon this lacquer Thereupo the composite p o passes beneath is applied mica, a pigment or a cellulose flock so the suction device 9 for the removal of the excess that the surface is non-adherent and presents miea- It then pa s s ou a drier II wh c an attractive appearance of any desired sheen or y b P ded With air Circulation pp color, heaters and the like. 7

This is a division of our co-pending applica- In Figure 7 is shown a tank II containing the tion, ser, No 189,637, fil d February 9, 1938, lacquer 2 so that the textile material can be im- Referring to the drawings: pregnated and coated on both sides as it passes 25 Figure 1 is a section through a textile material through the acq er 2 in the tanki I I. with the lacquer applied on one side. Referring to Figure 8, when the roll of tex- Figure 2 is a similar view with the lacquer ap tile material I passes beneath the guide roller plied on both sides. I2 and over the second guide roller I3 and thence Figure 3 is a similar view with the lacquer apover a support I4 where it receives the supply of 30 plied on both sides of the textile material and a coating material, which is the lacquer 2. The supplementary coating'of lacquer. depth of the coating is regulated by the knife 6.

Figure 4 is a similar view to Figure 3 with the The coated product then passes beneath the layer of mica, pigment or cellulose flock mounted oppe 5 Containing mica Which iS pin and upon the lacquer. plied by a rotary brush I6, which brushes it 35 t Figure 5 is a. similar view to Figure 4 showing through a, screen I'I. Thence the mica coated the same construction on both sides of the sheet passes beneath t e Suction apparatus 9 fabric. and into the drier I0.

Figure 6 is a diagrammatic illustration of the Referring 'tO'Figure iti'will be Seen that h several steps of the process of applying the ucroll of textile material I passes beneath the guide 40 cessive coatings to ne side of th t xtil aroller I2 over the guide roller I3 and thence terial. passes into the immersion tank II containing the Figure 7 is a similar View showing the method que AS it leaves this tank, Passes Of applying the coating to both sides of the neath adjustable squeeze rollers I8. It then material, passes through a passageway I9 on either side 45 Figure 8 is a modified form of a horizontal Of which are located brushes I6 which direct a coating machine, stream 20 of mica dust on either side of the Figure 9 illustrates a vertical coating machine. coated sheet, such dust being secured from the Referring to the drawings in detail, I desighoppers I5, which have rotary stirrers 2| in the nates the textile material. There is comprebottom thereof for supplying the mica to the 50 hended within the term textile material? fabrics, papers and other woven or fibrous materials of cotton, rayon and the like.

The lacquer hereinafter described is applied to the surface, or surfaces, of the textile material.

such lacquer being designated 2. Thereafter there is applied a layer of mica; pigment or cellulose flock, either with a second coating of lacquer 3, or .upon that coating. This layer of the roll IIlc, between rotary brushes "in and IBb for cleaning ofi excess mica. These brushes are located in the suction housing 9 which facilitates the removal of the surplus mica. The completed sheet then passes to the windup roll as indicated.

In Figure 8, the goods ar passed through four times. The first coatis applied on the face and on the back without mica, and the suceeding coats are applied with mica.

In- Figure 9, the textile material is impregnated in a bath of the coating lacquer so that the entire coating is applied to both sides in one operation, and the mica is dusted on the goods before-it is dried.

The temperature in the drier's is approximately 180 Fahrenheit. There is considerable air circulation. About 1400 cubic feet of air is withdrawn from each machine per minute, and an equivalent amount of fresh air is supplied so it can come in and mingle with the air currents on the inside of the drier.

LAOQUER The formulas may be varied for the lacquer while following the principle of this invention. Broadly speaking, the lacquer consists of a nitrocellulose body associated with suitable solvents, thinners and diluents; a resinous plasticizer,

' preferably of the alkyd type, and finally, a

softener. The following are some typical examples of such lacquers.

Example 1 Parts byweight Cellulose nitrate 12.7 Butyl acetyl ricinoleate 15.3 Paraplexf 12.7 Ethyl acetate 22.9 Alcohol 17.8 Troluoil 10.2 Toluol- 8.4

Example 2 Parts by weight Nitro cellulose 12.5 Maleic acid, ethylene glycol, castor oil,

res I 17.5 Methyl ricinoleate 15.0 Toluol 5.0 Ethyl acetate 22.5 Alcohol- I 15.0 Petroleum thinner 12.5

Paocnss The process consists of impregnating and coating the textile material, then applying the mica either directly or with another coating of lacquer, or upon a second coating of lacquer and thereafter removing the surplus mica before the coatings dry, or optionally after they dry. After the removal of the mica, the resulting product is thoroughly dried by the means and the temperatures heretofore indicated.

The preferable procedure is to apply the mica after the coating. It will be understood that in place of mica any pigment, cellulose flock, or other material of equivalent character may be employed. The use of the mica permits a softer formula than would be possible if it were not present, since it absorbs the slight tackiness right on the surface of the coating. The mica also protects the fabric from the light. Any plasticizer which will remain'inthe nitrocellulose and not tend to exude from the film at a slightly elevated temperature can be employed. The solvents can be adjusted and changed to varying formulas as in other lacquer mixtures. It should be emphasized that one of the principal features of the invention is to provide a thoroughly worked in mica coating, evenly distributed, with the surplus removed to form a non-adherent smooth surface of pleasing appearance, without interfering with the plasticity or flexibility or life of the underlying coating and fabric.

It will be understood that we desire to comprehend within our invention such modifications as may be necessary to adapt it to varying conditions and uses.

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent, is:

1. A new article of manufacture for use as a flexible waterproofing lacquer composition consisting of:

Parts by weight Cellulose nitrate 12.7 Butyl acetyl ricinoleate 15.3 Sebacic acid-glycerol resin 12.7

a solvent, and comminuted mica.

2. A new article of manufacture for use as a flexible waterproofing lacquer composition consisting of:

and comminuted mica.

3. A new article of manufacture for use as a flexible waterproofing lacquer-composition consisting of Parts by weight Cellulose nitrate 12.7 Butyl acetyl ricinoleate 15.3 Sebacic acid-glycerol resin 12.7 Ethyl acetate 22.9

a solvent and comminuted mica.

. CHARLES s. HYATT.

WILLIAM D. I-lIEDGES. 

